Open AccessExperimental - theoretical study of the stress-strain state of cable-stayed-rod systems of the dome type
Author(s) -
A. Akhmedov,
I V Loseva,
M. A. Kalmova
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1015/1/012013
Subject(s) - nonlinear system , hinge , type (biology) , matrix (chemical analysis) , stress (linguistics) , structural engineering , system of linear equations , linear equation , mathematics , mathematical analysis , engineering , geology , physics , materials science , paleontology , linguistics , philosophy , quantum mechanics , composite material
The problem of determining forces and displacements in a spatial hinge-rod system with missing links under static loading is considered. Equilibrium equations and geometric relationships are written in matrix form. The calculated equations are not linear. To solve the equations, a technique is proposed that is not associated with assumptions regarding the structure of the system or the nature of the load, based on the fact that the displacements obtained by solving the linear part of the equations can be significantly improved by interpreting the nonlinear terms as a load, under which the system can be considered as linear. To test the theoretical assumptions and preconditions, an experimental study was carried out on a model made at a scale of 1:30 of a natural design. The analysis of the results obtained is presented.